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Diffstat (limited to 'Documentation/cgroups/memory.txt')
| -rw-r--r-- | Documentation/cgroups/memory.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index c07f7b4fb88d..71c4da413444 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt | |||
| @@ -466,6 +466,10 @@ Note: | |||
| 466 | 5.3 swappiness | 466 | 5.3 swappiness |
| 467 | 467 | ||
| 468 | Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only. | 468 | Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only. |
| 469 | Please note that unlike the global swappiness, memcg knob set to 0 | ||
| 470 | really prevents from any swapping even if there is a swap storage | ||
| 471 | available. This might lead to memcg OOM killer if there are no file | ||
| 472 | pages to reclaim. | ||
| 469 | 473 | ||
| 470 | Following cgroups' swappiness can't be changed. | 474 | Following cgroups' swappiness can't be changed. |
| 471 | - root cgroup (uses /proc/sys/vm/swappiness). | 475 | - root cgroup (uses /proc/sys/vm/swappiness). |